Work holder



June 1, 1943. J. EsloNowsKs 2,320,606

l WORK HOLDER Fned Dec. 11, 1940 Patented June 1, 1943 UNITED STATES PATENT OFFICE WRK HOLDER .lohn Jesionowski, Hartford, Conn.

Application December 11, 1940, Serial No. 369,631

13 Claims.

My invention relates to work holders.

It has among its objects to provide an improved work holder and, more particularly, an improved vise of the general type described and claimed in my copending application Serial No. 366,455, filed November 20, 1940, having a movable jaw adapted to hold the Work during grinding or the like. A further object of my invention is to provide improved adjusting mechanism for this movable jaw and, more particularly, to provide such adjusting mechanism of an improved telescopic construction having improved means for preventing the entry of abrasive particles or cuttings, into the threadsI of the adjusting mechanism. A further object of my invention is to provide improved telescopic housing means for the telescopic threaded members used in adjusting the movable jaw, whereby the life of the latter members is substantially increased, while further increasing the safety of the mechanism in use and improving the appearance of the device. Other objects include the provision of an improved combined telescopic movable jaw actuating and thread shrouding apparatus whereby it is made possible to obtain the above advantages, and the provision of such an apparatus which is adapted to be produced without materially increasing the cost. These and other objects and advantages of my improved construction will, however, hereinafter more fully appear.

In the accompanying drawing, I have shown for purposes of illustration certain embodiments which my invention may assume in practice.

In this drawing- Figure l is a plan View of one form of my improvement, the movable jaw being shown in its closed position;

Fig. 2 is a sectional view on line 2 2 of Figure 1;

Fig. 3 is a like sectional view but with the movable jaw in its fully open position, the remainder of the mechanism being broken away to facilitate illustration;

Fig. 4 is a section on line 4-4 of Figure 3;

Fig. 5 is a section on line 5 5 of Figure 3;

Fig. 6 is a View similar to Figure 3 showing a modied construction, and

Fig. 7 is a like view showing a further modiied construction.

Referring to the illustrative construction shown in Figures 1 to 5, it will be noted that a sine vise of the general construction described and claimed in my application mentioned, is illustrated, including a sine base I having a stationary jaw 2 at one end thereof and a movable jaw 3 movable relative to the jaw 2 along the base I and operated by improved telescopic actuating and shrouding mechanism, hereinafter described.

Referring more particularly to this mechanism, it will be observed that a stationary Sleeve or abutment member 4 extends upward from the opposite end of the base I from the stationary jaw 2; this sleeve being positioned in a suitable recess y5 in the base and clamped thereto by a screw E. As shown, this member 4 also has a sleeve 'I extending to the inner end 0i the member 4 and protruding substantially beyond the opposite end thereof, this sleeve I herein having its inner end attached to member 4 by a transverse pin 8. Herein this sleeve 'I is internally threaded, as shown at 9, with right hand threads extending throughout the length of the member l'. Further, longitudinally over the protruding end I of this sleeve 1, an operating member or cap II is disposed, which has an unthreaded bore or socket I2 therein and a closed outer end I3, this member also being suitably roughened or knurled on its outer periphery as shown at !4. Herein, this member II is also provided with an annular groove IIa in its inner periphery and carries an annulansplit spring ring II b therein which is also receivable in a shallow annular groove IIc in the outer periphery of the sleeve 'I in such manner as to act as a detent holding the operating member II in proper longitudinal position on the protruding end of the sleeve I While permitting longitudinal removal of the operating member II whenever desired. This member II also has an axially disposed hexagonal turning member I5 suitably xed at its outer end to the closed end I3 of the member Ii and extending axially through the sleeve 1 to a point just inside the inner end of the latter, as shown in Figure 2. Slidably mounted on this hexagonal member I5 is a sleeve I having a like hexagonal aperture I5a in its outer end and also an enlarged externally threaded nut I1 surrounding the aperture I5a and threaded into the right hand threads 9 in the sleeve 'I. Herein, the opposite end of this sleeve I6 also carries a threaded nut I8 of smaller diameter than the nut Il and provided with a left hand thread I9 threaded into like threads 20 on the inside of a sleeve 2| suitably fixed at its right hand end, as by a transverse pin 22, in a suitable socket in the rear face of the movable jaw 3. Attention is also directed to the fact that the external surface of the sleeve 2| is Unthreaded and of such diameter as to enablethe sleeve 20 to enter the sleeve 'I without contact of the sleeve 2l with the threads 9 on the sleeve l. Thus, as shown in Figure 3, when the nut Il is moved into the extreme left hand end of the sleeve 1, the left hand end of the sleeve 2l Will also be disposed in the sleeve l adjacent the right hand end of the nut Il, the several parts being telescoped as shown.

In the operation of my improved construction, assuming Vthat the jaw 3 is in the fully open position thereof shown in Figure 3, it is evident that the same will be moved therefrom to the closed position shown in Figure 2 by simply rotating the operating member Il in a clockwise direction as viewed from the left of Figure i3. More particularly, as the member H is thus rotated, the hexagonal member l5 will be rotated therewith, and the latter will rotate the nut Il in such manner as to cause the latter and the sleeve I6 to move to the right in Figure 2. Further, the rotation of the nut Il rotates the sleeve I6 and nut i8, which, in turn, causes the sleeve 2| and jaw 3 to move to the right, the speed of movement of these last two members being increased, due to the combined action of the right hand threads on the members 1 and Il and the left hand threads on the members I8 and 2|. During this movement, it will be noted that the construction is such that none of the operating threads are exposed at any time, there being no exposed threads on the sleeve I6 in any position of the latter and the same being true of the sleeve 2l. Obviously, to eilect a reverse movement of the jaw 3, the actuating member or cap Il is merely reversely rotated. Attention here is also directed to the fact that when it is desired to leave the work in clamped position, as, for example, over night, it is only necessary to pull the actuating member l I longitudinally, whereupon its detent will release, in such manner as to minimize tampering during the operators absence, while, of course, the member Il may be readily replaced by simply reinserting the same longitudinally in such manner as to enter the hexagonal member I5 in the hexagonal socket lia.

In Figure 6 I have illustrated a modified construction generally similar to that heretofore described, but wherein the member I6 has an internally threaded nut I8a at its inner end cooperating with an externally threaded member 23 having an elongated socket 24 at its outer end slightly larger than the chamber 24a adapted to engage the hexagonal member I5; this member 23 herein having its opposite extremity 25 threaded into a suitable socket in the jaw 3 and held therein by a pin 2G. In this construction also an additional sleeve 27 is provided which is unthreaded both internally and externally and of such diameter as to be freely receivable between the internal screw threads on the member 1 and the Unthreaded external portion of the sleeve I6; this sleeve 2l herein enclosing the member 23 and also being fixed in a suitable socket in the jaw 3, as by an externally threaded connection 28. In Figure 7 I have also shown a further modified construction generally similar to that shown in Figure 6, but wherein, instead of providing a sleeve or abutment 4 and a separate internally threaded sleeve l connected thereto by a pin, as heretofore; the two are combined into an integral member 29 internally threaded as shown. Obviously, the operation of these two modied forms of construction will be generally similar to that heretofore described as regards the telescopic movements of the right and left hand threaded connections and the shrouding of these threaded portions.

As a result of my improvements, it is made possible, while retaining the telescopic threaded connections, through my improved construction to maintain the threads covered and thus obviate the objectionable action of the abrasives or cutting on the threads. Further, it is made possible to obtain these results while continuing to utilize high speed opposite threading for expediting movements of the movable jaw, and while continuing to obtain the advantages of the separable actuating member, by an improved construction of the operative parts, and while also minimizing the expense involved and also markedly improving the appearance of the mechanism.

While I have in this application specifically described certain forms which my invention may assume in practice, it will be understood that these have been shown for purposes of illustration, and that the invention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

l. In a work holding device, a vise having a horizontal base and stationary and movable jaws on the upper face thereof, and telescopic threaded actuating connections between said base and movable jaw disposed longitudinally of said base above said upper face including telescopic members fixed to said base and movable jaw and telescoping one within the other and an intermediate connecting member having its opposite ends oppositely threaded to said members and free from external threading intermediate its threaded ends.

2. In a work holding device, a vise having a horizontal base and stationary and movable jaws on the upper face thereof, and telescopic threaded actuating connections between said base and movable jaw disposed longitudinally of said base above said upper face including cooperating V0ppositely threaded members fixed to said base and movable jaw and telescoping one within the other, respectively, an intermediate member having its opposite ends oppositely threaded to said members and having a portion free from external threading intermediate said ends, and an outer shrouding member carried by said movable jaw and forming an extension of the externally unthreaded portion of said intermediate member in the closed position of the jaws.

3. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members iixed to said base and movable jaw, an intermediate member threaded to said members and telescopic therewith, and actuating mechanism for said intermediate member carried on the threaded member on said base and having a rotatable turning member extending axially of and rotating said intermediate member and telescopically received in the latter.

4. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw, an intermediate member threaded to said members and telescopic therewith, and actuating mechanism for said intermediate member carried on the threaded member on said base and having a rotatable turning member extending axially of and rotating said intermediate member and telescopically received in the latter, said threaded member on said base having a protruding portion and said actuating mechanism including an actuating cap on said portion and carrying said turning member.

5. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members xed to said base and movable jaw, an intermediate member threaded to said members and telescopic therewith, actuating mechanism for said intermediate member carried on the threaded member on said base and having a rotatable turning member extending axially of and rotating said intermediate member and telescopically received in the latter, said threaded member on said base having a protruding portion and said actuating mechanism including an actuating cap on said portion and carrying said turning member, and detent mechanism for connecting said cap to said protruding portion.

6. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw and telescoping one within the other, an intermediate member threaded to said members and telescopic therewith, and actuating mechanism for said intermediate member carried on said threaded member on said base and having a rotatable turning member rotating said intermediate member and extending axially of the latter and telescopically received therein, said lintermediate member being free from external threading intermediate its ends and said movable jaw carrying shrouding means forming an extension of said unthreaded portion in the closed position of said Jaws.

'7. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw, an intermediate member threaded to said members and telescopic therewith, and actuating mechanism for said intermediate member carried on said threaded member on said base and having a rotatable turning member rotating said intermediate member and extending axially of the latter and telescopically received therein, said intermediate member being free from external threading intermediate its ends and oppositely externally threaded on its ends and said threaded members being oppositely internally threaded.

8. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw, an intermediate member having its opposite ends oppositely threaded to said members, and actuating mechanism for said intermediate member carried on said threaded member on said base and having a rotatable turning member therefor extending axially into said intermediate member, the threaded member fixed to said movable jaw having a sleeve shrouding the same and telescopically received between said threaded member on the base and said intermediate member.

9. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members xed to said base and movable jaw and one telescopically receivable in the other, an intermediate member having its opposite ends threaded to said members and telescopically received therein, and means for rotating said intermediate member to move the latter and the threaded member attached to said movable jaw into and out of telescopic relation with one another and the threaded member on said base.

l0. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members iixed to said base and movable jaw, an intermediate member having its opposite ends threaded to said members and telescopically received therein, and means for rotating said intermediate member to move the latter and the threaded member attached to said movable jaw into and out of telescopic relation with one another an'd the threaded member on said base, said latter member having a protruding portion and said rotating means including a member rotatable on said portion and carrying a turning member extending axially thereof and telescopically received in said intermediate member.

1l. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw and one telescopically receivable in the other, an intermediate member having its opposite ends threaded to said members and telescopically received therein, and means for rotating said intermediate member to move the latter and the threaded member attached to said movable jaw into and out of telescopic relation with one another and the threaded member on said base, said intermediate member and said threaded member fixed to the movable jaw having their threads shrouded in all operative positions of said jaw.

12. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members xed to said base and movable jaw, an intermediate member having its opposite ends threaded to said members and telescopically received therein, and means for rotating said intermediate member to move the latter and the threaded member attached to said movable jaw into and out of telescopic relation with one another and the threaded member on said base, said intermediate member having threaded ends and an intermediate unthreaded external portion between said ends, and said threaded member fixed to said movable jaw being movable therewith and having its exterior free from threads and receivable in said threaded member xed to said base between the latter member and said intermediate member.

13. In a work holding device, a base, stationary and movable jaws thereon, oppositely threaded members fixed to said base and movable jaw, an intermediate member having its opposite ends threaded to said members and telescopically received therein, and means for rotating said intermediate member to move the latter and the threaded member attached to said movable jaw into and out of telescopic relation with one another and the threaded member on said base, said intermediate member having internally and externally threaded opposite ends and an unthreaded external portion extending from the externally threaded end portion to the opposite end thereof, and said threaded member xed to said movable jaw being externally threaded to cooperate with the internal threads on said intermediate member and having shrouding means for said external threads movable therewith and receivable between said intermediate member and the threaded member xed to said base.

JOHN JESIONOWSKI. 

